Thermodynamically destabilized hydride formation in "bulk" Mg-AlTi multilayers for hydrogen storageElectronic supplementary information (ESI) available: Experimental details, XRD patterns, SEM image and the data on Mg-Ti. See DOI: 10.1039/c3cp52706a

Thermodynamic destabilization of MgH 2 formation through interfacial interactions in free-standing Mg-AlTi multilayers of overall "bulk" (0.5 μm) dimensions with a hydrogen capacity of up to 5.5 wt% is demonstrated. The interfacial energies of Mg-AlTi and Mg-Ti (examined as a baseline) are...

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Main Authors: Kalisvaart, Peter, Shalchi-Amirkhiz, Babak, Zahiri, Ramin, Zahiri, Beniamin, Tan, XueHai, Danaie, Mohsen, Botton, Gianluigi, Mitlin, David
Format: Article
Language:English
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Summary:Thermodynamic destabilization of MgH 2 formation through interfacial interactions in free-standing Mg-AlTi multilayers of overall "bulk" (0.5 μm) dimensions with a hydrogen capacity of up to 5.5 wt% is demonstrated. The interfacial energies of Mg-AlTi and Mg-Ti (examined as a baseline) are calculated to be 0.81 and 0.44 J m −2 . The enhanced interfacial energy of AlTi opens the possibility of creating ultrathin alloy interlayers that provide further thermodynamic improvements in metal hydrides. Magnesium hydride formation is destabilized through interfacial interactions with ultrathin (2 nm) AlTi interlayers to twice the extent of previous reports.
ISSN:1463-9076
1463-9084
DOI:10.1039/c3cp52706a